Air 2.0 in Flex Builder 3

I need to use the NativeProcess API available in Air 2.0 so went about doing this by including the Air2.0 SDK in Flex Builder 3 which gave me access to the APIs. I wrote my app and it worked beautifully within Flex Builder 3.
However, when I export a release build (.air file) and attempt to install it I get the following error:
"Sorry, an error has occurred.
This application requires an update to Adobe AIR that is not available for your system.
I have installed Air 2.0 on my system (done it several times to make sure).
I have the following namespace in my .xml file:
<application xmlns="http://ns.adobe.com/air/application/2.0beta"> 
Could this be the issue?
If anyone can shed some light on this that would be great.
Was looking forward to using the features offerred in Air2.0 but am at a stand still now.

Hi Neha,
Again thank you for your help but unfortunately still cannot get this working, I have resorted to using the exact files (except the swf) and instructions at http://www.adobe.com/devnet/air/flex/quickstart/interacting_with_native_process_print.html to try and get some sort of example of NativeProcess working and after some tweeking got it to build the exe but running it gives me the same error i started with:
"This application requires an update to Adobe AIR that is not available for your system."
One of the tweeks i made was to the namespace in the xml file, it had to be:
<application xmlns="http://ns.adobe.com/air/application/2.0beta">
http://ns.adobe.com/air/application/2.0 was not recognised running the adt command (got error 102: invalid namespace).
I really want to be able to get this working so I can determine if NativeProcess is the solution to my project.
Maybe if I explain my needs you could possibly offer a better, proven solution:
I have an existing Air desktop app (originally Air 1.0) that is invoked from the browser, I would like an additional feature to this app that executes a command line call to make something happen on the users machine - specifically add a track to the users iTunes library.
Any ideas would be greatly appreciated.
Thanks,
Bilge.

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